Formulae Describing Subjective Attributes for Sound Fields Based on a Model of the Auditory-Brain System

Dissimilarity Judgments in Relation to Temporal and Spatial Factors for the Sound Field in an Existing Hall

“…Fundamental subjective attributes for the sound field in a concert hall are accurately described by the model of auditory-brain system when taking into account the contributions of the ACF and IACF mechanisms. For example, the speech intelligibility of a spoken syllable with a single reflection can be calculated from temporal factors extracted by the ACF [6,7]. In concert hall acoustics, the theory of subjective preference allows one to calculate the scale values of subjective preference in terms of four orthogonal factors: the listening level ðLLÞ; the initial time-delay gap between the direct and the first reflection ðDt 1 Þ; the subsequent reverberation time ðT sub Þ; and the interaural correlation coefficient ðIACCÞ [1].…”

Objective Characterization of Perceptual Dimensions Underlying the Sound Reproduction of 37 Single Loudspeakers in a Room

“…Widening the frequencyr ange to 1500 Hz reduced correlation values. With a500-Hz low-pass cut-off frequencythe highest correlation is 0.67, obtained when considering the W IACF with a δ taken 10% lower than the IACC as proposed by Ando et al [32]. These authors showed that the "Apparent Source Width" (ASW)w as correlated to IACC and W IACF .T heya lso proposed af ormula combining both IACC and W IACF as an attribute describing "spaciousness".…”

Correlation Factors Describing Primary and Spatial Sensations of Sound Fields

“…Important subjective responses of sound fields in relation to all the above-mentioned all of orthogonal factors are listed in Table 4. These include preferred conditions of performers [30], speech intelligibility [18], and reverberance of sound fields [31]. 6.…”

“…According to experimental results on the pitch perceived when listening to the bandpass noises without any fundamental frequency, the pitch s p is expressed by equation (6) as well. The strength of the pitch sensation is described by the magnitude of the first peak of the ACF, f 1 [18]. For the signal of a short duration, factor D might be taken into account.…”